Color-grinding machine



Jan. 13, 1931. v s 1,788,964

' COLGR GRINDING MACHINE Filed June 7 1928 2 Sheets-Sheet 1 Jan. 13, 1931.

e. A. VASEL 1,788,964

COLOR GRINDING MACHINE FiIed June 7 1923 2 Sheets-Sheet 2 Patented Jan. 13, 1931 GUs'rAvA VASEL, or PHILADELPHIA, PENNSY VAmA COLOR-GRINDING MACHINE Application filed June 7,

Mv invention relates to machines for grlncung materials toa very fine state, such for example as plginents which are'employed in the manufactureof inks,- paints and" the like. v i

In the grinding of materials ofthis char: acter it is necessary that the grinding cylin ders lie-accurately adjusted with relation to each otherand also that means he provided whereby the pressure between the cylinders may be accurately and efficiently controlled.-

' The general object of the invention is to provide a novel means for regulatingand controlling the pressure between the grinding cylinders in the operationthereof to -grind the color materials. r

' It also is an objectofthe invention to provide means of novel construction whereby exact adjustment of the rolls or cylinders with respect to each other may be effected whereby thesaid' rolls may be held in exact and accuratepa-rallel relation withfre'sp'ect to each other during operation 7 p a Another'object of the invention is'tovprovide means whereby injuryto the mechanism of the machine may be avoided in case a piece of; metal or the like'should be introduced in between the relatively I rotating grinding cylinders. 1

indicate'all of the variousob-jects and ads objects and advantages will befreterredto in or else will become, apparent from the detailed description thereof which follows x In order that the invention may be readily understood and its many practical advantagesv fully appreciated reference shouldibe had to the accompanyingdrawings in which I haveillustr'ated one form of; a' convenient "embodiment of the invent-ion.

In the drawings: V #Fi'gld is a view'i'n sectional top plan elevation; W

7 taken along the line 2-2 of'Fig. '1 V sFigJ} 3 is a vertical sectional view taken along the line 33 of Fig. 2 in alinement with the axisof one of the grindingcylinders; and W Fiwe is aview'in sideelevation 'ofia pcr I shall not here attempt a set his and Fig.2 is a transverse vertical sectional View? tion ofthe-idriving gear shown at the lower sidejo-i Fig; 1. 1

-ln'the drawings 1 have shown a base or supporting member 1 having at its opposite sides upwardly extending edge or flange por tions 2 upon which the side members "3' are mounted and to which they are 'secured'by c means of bolts certain of which are indicated at 4. Theunder sides of-the respectiverne nbers3'are cut away as indicated at 5 toform spaces'between the top portions of. the said members and the opposing upper sidesor edge portions of the upwardly extending flange-like portions 2 of the base 1; j The under sidesofthe top portions of each offthe side 'members 3 are provided with grooves 10 Within which are located bars 11 which aresecured therein by means of screws -12 located at 'intervals. -V The upper sidesor I i edges of the upwardly projecting orfiangelike portions 2 oithebase 1 likewise are provided with grooves'13 within-which are-'10- .cated bars let held in place by *means of screws 15.? 1 W Bearing blocks and 21 are located within the spaces'formed by thecut-out portionshr 'ihe'bearing blocks 21 are held in stationary position within the said spaces, being so held by the engagement of the outwardly extending projections 22 and 23-thereon" whichengage-notches in the adjoining portions of the side members 3andthe upwardly extending flange like portions 2. Theseprojec-tions, 22 and 23 are shown in Fig." 2 uponone of'the blocks 21.-- The vbearing blocks 20 are'pro' 'vided' respectively with grooves 25 and 26 in their upper and low-er .-sides respectively, 7 which grooves engage the bars 11 and 14: towhich previous 7 reference has been made. The bearingblo'cks 20 are slidable toward and from the stationary bearing blocks. 21. v The intermediate or central grindingcylinder 30 isprovided with-trunnions 31 at its opposite ends which are journaled in ball bearing devices 82,,ofj any known construction, mounted within the bearing blocks 21'. ,The' grindinglcylinders 33 likewise are pro- .vided at their oposite ends with trunnions 34 which are rotatably supported 'in ball bearingdevices recanted within'the bear ing blocks 20. The bearing blocks 21 being held in stationary position as before stated,

it follows that the intermediate grinding "cylinder 30 is held against lateral movement.

The cylinders 33 which are supported at their opposite ends by means of ball bearings in the bearing blocks which are slidable, it follows that the said cylinders 33 may be adjusted toward and from the central or intermediate cylinder so as to vary the relation between surfaces of the outer cylinders with respect to the intermediate cylinder. All of the cylinders'are' rotatable;

I ing mechanism, indicat'ed'asa whole at 43,

to the cylinders 30 and 33.

Rotation thereof is adapted to beeifected by means of an electric motor a portion only ofwhich-is shown. Any othersuitablepower means may be employed for driving the cylinders 30 and 33, that is, for'causing'rotation thereof The powerfrom the motor- {tO is transmitted through: a driving belts l1 to a pulley-d2 and from the latterthrough gear- The drivinggears offthe gear system i3 are keyed soas to have positive connection with extensions of the 'ournals3l: and 34 previously referred to. It desirable and practicall necessary in color grinding ma-e chines that gearing means beqeniployed between theextended trunnions at the opposite ends of the cylinders as indicatedat 45. The train of gearing will. not-be described in detail except to saythat thegears' which are mounted upon the trunnion 31 cf thecylinder 30 are positively keyed thereto and are not relatively adjustable thereon. The gears hit 45* and l5 of the gear system or chain L5 are 'adjustably mounted upon the extended portions of the adjoining trunnions which project from thecylinders 33. The gears s5 and 45* may be adjusted with relation to the trunnions upon which they arei mountedand held in their adjusted positions'by means of the adjustable screw bolts 46 mounted in ears provided upon sleeves 47 which; are-keyed upon andheld in fiired relation withrespect to the journals of the' respective cylinders 33 and an. ."The inner ends of theadjustable screws e6 are located upon opposite sides of lugs s8 which project outwardly from the gears 45 and e5 respectively:- it will be apparent, therefore that-b'y adjusting'the justable screwbolts 46 the igQtLI'S 45mm e5? may be adjusted with respect tothe'trunnions upon which they are mounted; a The purpose of'such adjustment is to so( relate the gears 45* and 45 to the gear with which they cooperate and which is mounted upon the trunnion or journal of the grinding jcylin der 30 that there shall-benolost motion between the engaging teeth thereof; In: other words; the gear teeth'jof thegears4553 and 45 should bear the same relation to the gear upon the trunnion or journal'of the intermediate grindingeylinder 'ilo as that: which exists between the corresponding gears of s the train 4-3.

As has been stated already the bearing blocksQO are slidablyfmounted and by'reason of the engagement of the grooves in the upper and lower sides of the said blocks with the guide bars 11 and Li thesaid blocks are held against twisting movements and are guided along rectilinearpaths. By thus holding the said blocks against twisting movei-iients' thegrinding cylinders supported thereby areheld or are apt'to beheld in more accu'rate p'arallel relation with respect to the intermediate grinding cylinder which is held-against lateral movement in either direction than otherwise would be the case,

For a purpose which hereinafter will be described more; fully Iprovide between the blocks 21 and the blocks 20 coiled springs one end of each of which rests in a depression or seat 51in a bearing-block 20 while theopposite end of each of which is seated upon an adjustable disc-like head member 52 supported upon-the outer end of a screw 53 whichhas adjustable screw threaded connectio'n'with an intermediate stationarylbearing block 21. I The disc-like head members 52 are provided with holes in their peripheries; as indicated, adapted to be ensupplied from a source, not shown, through a pipewhich is connected" with 1 a cross-wise extending pipe 61 the opposite ends of which are connected to piston cylinders 62 and '63-. These" latter cylinders are in communication through pipes 64: and 65' with like piston cylinders 66 and 67 These piston cylinders, in

the construction as illustrated, arefprovided upon the opposite end's'of-the side members 3 and are integraltherewith. Their outer ends areclosedmeans of closing-discs orjheads 70. The saidcylinders are provided respectively with pistons 71 having inwardly eX- tending or projecting connecting rods. or plungers 72 which extend through openings 73 in the inner ends thereof. The saidplungers contact attheir innerends withbreaker blocks or devices 75 which devices in the construction as illustratedare of channel shape in cross section-cfjHowever; th'eymay beef anyother'design;which niay bedesired. The

outer sides of 'the'said breaker blocks are provided with a depression, which a maybe spherical with which depression the inner ends ofthe said 'plungers 72 are in contact as shown; I

"In the operation of the IHZIClllI18 if it should happen that a: piece of metal should find its way between the rolls, it is likely that some part of the mechanism would be broken or otherwise injured unless some means were provided to release or relieve the pressure. The. breaker blocks constitute that means;-

They are so designed and constructed that upon the application of acertain predeter-f mined crushing pressure thereto they collapse. In I practice they are designed and constructed so thatthev will collapse orbreak in advance of the breakage of other parts of the machinery affected in order'fto relieve the pressure due to the-accidental presence of a piece of metal or'the like between one or the ders'. Three-way valves 82 are providedin 7 these valves or either of them adjustment of.

thepipe 61 as'shown, whichvalves when adjusted to one positionpermit fluid to flow outwardly oraway from the-piston cylinders' of-the machine. In other words, by opening the pressure of the fluid. within-the pistons may be effected; 7

For the purpose of indicating the pressure of the fluid within the piston cylinders pressure gauges 83 are mounted upon the pipe 61 upon opposite sides of the connection of the pipe 60 therewith. The portions of the pipe 61 uponoppo'site sides of the connection of the pipe thereof may beregarded and re ferred to as branch portions, one branch having connection'with thepiston cylinder 62 and the other having connection with the piston cylinder 63. V I V In the operation of themachine fluid at the required pressure is admitted to'thepis ton cylinders 62, 63, 66 and 67. It will be apparent that the pressure in thetwo cylinders 62 and 66 and inthe two cylinders 63 and 67 will be the same because they are directly connected by the respective pipes 6e.

' and 65. The first thing to be determined is whether or not the cylinders 33 are in exact parallel relation to the cylinder 30. This maybe done by providing a light above the cylinders and then observing the streaks of light underneath the cylinders, and if those streaks are of the same width fromend to end it will apparent that the distance between the} adjoining surfaces o f the the same from endto end.

It will be apparent that in: the grinding of colorfsubstancessuch as pigments'tojthe" fineness desired and necessary in theproduction of inks and paints the adjoining sur faces of the grinding cylinders must be located in very close relation to each-(other, although ofcourse not in absolute contact. i

Should it happen that when a pair ofjpis ton cylinders 62 and 66 are provided with a fluid under pressure the streak of light becylinders in tween a cylinder 33 (which ispressed inwardv ly by the plungers 72 projecting from'ithe said cylinder) and the cylinder 30 is wider at one end than at another, that will be an indication that the springs between the bear-- ing blocks upon which the said cylinder is supported and the adjoining "bearing blocks which support the cylinder 30 are of diflerent strengths ortensions. By proper adjustment of one or the other of the springs so as to vary the tension thereof adjustment of the cylinder 33 may be effected so as to place it in exact and absolute parallel relationto the intermediate stationary grinding cylinder. Such adjustment of the cylinder 33 may be eflected by increasing the tensionof the v intermediate spring located at that end of the cylinder which is nearerto the" adjoining-end of the intermediate cylinder. or such adjustment may be efiected by decreasing the-tension of the spring at the opposite ends of the said cylinders. After the pressure fluid has been admittedto the piston cylinders and the pressures which are desired obtained therein the valves located within'the branches ofthe pipe 61 are closed.- It maybedesired thatthe pressureinthetwo couples of cylinders 62rand 66 and 63 and 67'should be 'difierent That condition maybe readily ettec'ted or brought about either by manipulate ing the valves and 81 to'control the pres suresyor it may be that initially fluid may be permittedto enter the piston cylinders. so as way valve 182rnanipulated to reduce the pressure in one. 'ornthe other of the couples of piston cylinders. 6' 4 I "It w'villfbe seen that by theconstruction as illustrated embodying my invention Ihave provided means whereby the relation or" the adjustable cylinders 33 with respect to the intermediate cylinder may-be varied and ac curately controlledyand also thatl have pro v to producethe same amount'of pressure in I each and all'ofthem'and thereafter'thethreeivided' separate and "independently acting means forcontrolling the pressure of the,

slidable cylinder actuating fluid whereby the pressure between one of the cylinder-s33 and the intermediate cylinder may, be idi'flerent from-that of the other of said cylinders 33 and the'said intermediatejcylinder 30- The material to be ground is introducedin known manner onto the cylinders and is discharged j I i therefrom onto a discharge apron 90 from {which it is discharged into a. suitable receiver or container.

Having thus described my inventlon, what I claim and desire to secure by Letters Patentis': 7 v Y 1. A color grinding machlne, comprising a rotatable grinding cylinder supported in stationary bearings, rotatablegrinding cylinderslocatcd on'opposite sides of the first named cylinder, said second named cylinders being supported in slidable bearings, guide bars for guidingthe said slidable bearings in their movements, fiuid pressure acturotatable grinding cylinder supported at its opposite ends in stationary bearings, rotatable grinding cylinders located on opposite sides of and in operative relation to the first named cylinder, the second namedcylinders being mounted at their opposite ends in slidable bearings, fluid pressure actuated means which are adapted to act upon the said slidable bearings to force them toward the stathe said slidable bearings to press the same toward the stationary bearings, collapsible means interposed between the said fluid pressure actuated means" and the said slidable bearings, and means for controlling the pressure of the fluid upon the said fluid pressure actuated means. j

'4. A color grinding machine, comprising a grinding cylinder, stationary bearings by which the said cylinder is rotatably supported, grinding cylinders located. upon opposite sides oi said cylinder, slidable bearings by which thesaid last mentioned cylinders are supported, the said bearings having grooves intheir opposite sides,'supports for all of provided with elongated guiding means projecting-therefrom and engaging V with the grooves in the opposite sides of the said bearings to guide the same in their movements, fluidv pressure actuating means for forcing the slidable bearings toward the stationary bearings, means whereby: the pressure of the said fluid as applied to the said slidable bearings may be controlled to controlthepressure exerted by the cylinders carried thereby dur-- ing the grinding operation," and means interposed between the slidable and the stationary bearings whereby accurate relative adjustment of the said bearings and of the cylinders carried therebywith respect to each other maybe obtained.

the s a1d,bear1ngs,the sa d supports bemg In testimony that I claim the foregoing as i my invention I have hereunto signed my name this lth'day of June, 1928, I GUSTAV'A. VASEL.

tionary bearings, collapsible means interposed between the said fluid pressure actuated means and the said slidable bearings which is adapted to yield upon the application of excessive pressure thereto, means for controlling the fluid pressure action upon thesaid fluid actuated means, and yielding means interposed between the said slidable bearings and the saidlstationary bearings, and adjustable devices for adjustingthe said'yielding means and varying the tension thereof.

3. A'color'gri-nding machine, comprising a grinding cylinder supported at'its opposite ends in stationary bearings, grinding cylinders which coa'ct with the. firstnam'ed cylinder and which are supported at their opposite ends-in bearings which are slidable toward and from the'first named bearings, 7

means for-guiding the said slidable bearings toward and from the stationary bearings,

coiled springs interposed between the slidable bearings and the stationary'bearings, ad-

justable devices mounted upon the stationary "bearings with which the inner ends of said springs are in engagement, which devices are adapted to be adjusted independently of each other to vary the tension of the said springs,

fielder-ass aqt ate inea s or acting upon 

